# #

A uranium-238 atom can break up into a thorium-234 atom and a particle called an alpha particle, $$\alpha$$-4. The numbers indicate the masses of the atoms and alpha particle in atomic mass units (1 amu = $$1.55\times 10^{-27}$$ kg). So, for example, the uranium atom has a mass of 238 amu.

## Part 1#

When a uranium atom breaks up, the thorium atom is observed to recoil with a velocity of $$\times 10^5$$ $$m/s$$. How much of the uranium atom’s internal energy is released in the breakup? Assume that the uranium atom was initially at rest.

### Answer Section#

Please enter in a numeric value in .

## Attribution#

Problem is licensed under the CC-BY-NC-SA 4.0 license.